Diagnostic Kit Strip Cutting Device with Concentricity Adjustment
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Solution Overview
Problem
Existing strip cutting devices for diagnostic kits face issues with blade concentricity, maintenance costs, and accuracy due to the slanted pressurization of blades and spacers, leading to defective cuts and short-term blade durability.
Innovation Solution
A strip cutting device with concentricity adjustment screws on an adjustment nut for each shaft, allowing precise alignment and elastic support for longitudinal adjustment, along with spacers having projections to prevent deformation and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If blades and spacers are fixed to the shaft using an adjustment nut, then the blades can be secured in position, but the blades and spacers become slanted due to uneven pressurization, resulting in poor concentricity and inaccurate cutting
Solution Approach 1:
The adjustment mechanism is divided into multiple concentricity adjustment screws distributed around the adjustment nut, rather than using a single centralized fastening point. This segmentation allows independent adjustment of different regions, enabling uniform pressurization and elimination of slanting while maintaining secure blade fixation.
Solution Approach 2:
Each concentricity adjustment screw provides localized pressurization at specific points around the blade assembly. By adjusting individual screws, the pressurization distribution can be optimized locally to achieve overall concentricity, ensuring both secure fixation and accurate cutting without slanting.
2Strength
If the adjustment nut is tightened to secure blades and spacers, then the blades are fixed firmly, but the blades become damaged or deformed due to excessive or uneven force
Solution Approach 1:
The fastening force is distributed across multiple concentricity adjustment screws rather than concentrated at a single adjustment nut. This segmentation allows the total fixation force to be divided into smaller, controlled portions, securing the blades firmly while preventing excessive force that could damage or deform them.
Solution Approach 2:
The adjustment mechanism allows precise control of pressurization parameters through individual screw adjustments. By independently tuning each concentricity adjustment screw, the pressurization can be optimized to achieve firm fixation without exceeding the threshold that would cause blade deformation or damage.
3Reliability
If blades are pressurized unevenly to maintain fixation, then the blades remain secured, but the concentricity of blades and spacers deteriorates, leading to defective cuts
Solution Approach 1:
The adjustment system is segmented into multiple concentricity adjustment screws positioned around the blade assembly. This segmentation enables independent adjustment of each region, allowing uniform pressurization distribution that simultaneously achieves secure fixation and maintains concentricity for precise cutting.
Solution Approach 2:
The concentricity adjustment screws provide a feedback mechanism where each screw can be adjusted based on the observed concentricity status. By iteratively adjusting individual screws and checking concentricity, the system converges to an optimal state where blades are securely fixed and concentricity is maintained for accurate cutting.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures accurate cutting with long-term blade protection by maintaining concentricity and allowing precise adjustments, reducing maintenance costs and improving cut quality.
Implementation Method 1
the blades and spacers are pressurized in the direction of the shaft to adjust the concentricity of the blades and spacers
Implementation Method 2
a first shaft to be adjusted in position in a longitudinal direction thereof, while being elastically supported
Data Source
AI summary
The present invention is configured such that an adjustment nut for fixing spacers and blades repeatedly fitted to a shaft is provided with at least two concentricity adjustment screws, and, with the spacers and the blades fixed by the adjustment nut, the spacers and the blades are pushed by the concentricity adjustment screws in the direction of the shaft to enable concentricity adjustment, and thus, without causing defects, the blades are protected and can be used for a long time. In particular, according to the present invention, while one side shaft with respect to a diagnostic sheet is elastically supported, position adjustment in the longitudinal direction thereof is possible, and also projections are formed on the peripheries of the surfaces of the spacers facing the cutting edges of the blades thus to provide extra spaces for the blades in which the blades move, thereby preventing the deformation of cut strips and the damages on the blades.